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package DBIx::Class::Schema::Loader::DBI::DB2;
use strict;
use warnings;
use base qw/
DBIx::Class::Schema::Loader::DBI::Component::QuotedDefault
DBIx::Class::Schema::Loader::DBI
/;
use Carp::Clan qw/^DBIx::Class/;
use Class::C3;
our $VERSION = '0.07000';
=head1 NAME
DBIx::Class::Schema::Loader::DBI::DB2 - DBIx::Class::Schema::Loader::DBI DB2 Implementation.
=head1 SYNOPSIS
package My::Schema;
use base qw/DBIx::Class::Schema::Loader/;
__PACKAGE__->loader_options( db_schema => "MYSCHEMA" );
1;
=head1 DESCRIPTION
See L<DBIx::Class::Schema::Loader::Base>.
=cut
sub _setup {
my $self = shift;
$self->next::method(@_);
my $dbh = $self->schema->storage->dbh;
$self->{db_schema} ||= $dbh->selectrow_array('VALUES(CURRENT_USER)', {});
if (not defined $self->preserve_case) {
$self->preserve_case(0);
}
elsif ($self->preserve_case) {
$self->schema->storage->sql_maker->quote_char('"');
$self->schema->storage->sql_maker->name_sep('.');
}
}
sub _table_uniq_info {
my ($self, $table) = @_;
my @uniqs;
my $dbh = $self->schema->storage->dbh;
my $sth = $self->{_cache}->{db2_uniq} ||= $dbh->prepare(
q{SELECT kcu.COLNAME, kcu.CONSTNAME, kcu.COLSEQ
FROM SYSCAT.TABCONST as tc
JOIN SYSCAT.KEYCOLUSE as kcu
ON tc.CONSTNAME = kcu.CONSTNAME AND tc.TABSCHEMA = kcu.TABSCHEMA
WHERE tc.TABSCHEMA = ? and tc.TABNAME = ? and tc.TYPE = 'U'}
) or die $DBI::errstr;
$sth->execute($self->db_schema, $self->_uc($table)) or die $DBI::errstr;
my %keydata;
while(my $row = $sth->fetchrow_arrayref) {
my ($col, $constname, $seq) = @$row;
push(@{$keydata{$constname}}, [ $seq, $self->_lc($col) ]);
}
foreach my $keyname (keys %keydata) {
my @ordered_cols = map { $_->[1] } sort { $a->[0] <=> $b->[0] }
@{$keydata{$keyname}};
push(@uniqs, [ $keyname => \@ordered_cols ]);
}
$sth->finish;
return \@uniqs;
}
# DBD::DB2 doesn't follow the DBI API for ->tables
sub _tables_list {
my ($self, $opts) = @_;
my $dbh = $self->schema->storage->dbh;
my @tables = map $self->_lc($_), $dbh->tables(
$self->db_schema ? { TABLE_SCHEM => $self->db_schema } : undef
);
s/\Q$self->{_quoter}\E//g for @tables;
s/^.*\Q$self->{_namesep}\E// for @tables;
return $self->_filter_tables(\@tables, $opts);
}
sub _table_pk_info {
my ($self, $table) = @_;
return $self->next::method($self->_uc($table));
}
sub _table_fk_info {
my ($self, $table) = @_;
my $rels = $self->next::method($self->_uc($table));
foreach my $rel (@$rels) {
$rel->{remote_table} = $self->_lc($rel->{remote_table});
}
return $rels;
}
sub _columns_info_for {
my $self = shift;
my ($table) = @_;
my $result = $self->next::method($self->_uc($table));
my $dbh = $self->schema->storage->dbh;
while (my ($col, $info) = each %$result) {
# check for identities
my $sth = $dbh->prepare_cached(
q{
SELECT COUNT(*)
FROM syscat.columns
WHERE tabschema = ? AND tabname = ? AND colname = ?
AND identity = 'Y' AND generated != ''
},
{}, 1);
$sth->execute($self->db_schema, $self->_uc($table), $self->_uc($col));
if ($sth->fetchrow_array) {
$info->{is_auto_increment} = 1;
}
if ((eval { lc ${ $info->{default_value} } }||'') eq 'current timestamp') {
${ $info->{default_value} } = 'current_timestamp';
delete $info->{size};
my $orig_deflt = 'current timestamp';
$info->{original}{default_value} = \$orig_deflt;
}
}
return $result;
}
=head1 SEE ALSO
L<DBIx::Class::Schema::Loader>, L<DBIx::Class::Schema::Loader::Base>,
L<DBIx::Class::Schema::Loader::DBI>
=head1 AUTHOR
See L<DBIx::Class::Schema::Loader/AUTHOR> and L<DBIx::Class::Schema::Loader/CONTRIBUTORS>.
=head1 LICENSE
This library is free software; you can redistribute it and/or modify it under
the same terms as Perl itself.
=cut
1;
# vim:et sts=4 sw=4 tw=0:
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